Switch-throwing device.



D. OSBURNJ SWITCH THROWING DEVICE. APPLICATION FILED JULY 24, 1911 1,024,27 9. Q Patented Apr. 23, 19,12.

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WIT ESSES: INVENTOR. ,U 5 fur/M M W BY DAVID OSBURN, OF HORNING, PENNSYLVANIA.

SWITCH-THROWING DEVICE.

inseam.

erence being had therein to the accoinpany ing drawings,

This invention relates to a switch throw ing device, and the primary object of my invention is to provide positive and reliable means, as will be hereinafter set forth, for holding a switch tongue in an adjusted position, so that it cannot become accidentally displaced, yet permitting the flange of a wheel shifting the switch tongue when a car is moving in the proper direction.

Another object of this invention is to provide a switch throwing device that can be advantageously used in connection with mine and other industrial railways, the device being simple in construction, durable, and highly efficient for the purposes for which it is intended.

With the above and other objects in view, the invention resides in the novel construction, combination, and arrangement of parts to be hereinafter specifically described and then claimed.

Reference will now be had to the drawing, wherein:

Figure 1 is a plan of the device; Fig. 2 is a side elevation of the same; Fig. 3 is a side elevation of one of the frames looking toward the inner face thereof; Fig. a is a vertical cross sectional view of the device, and Fig. 5 is an elevation of a portion of a modified form of lever.

The reference numerals 1 and 2 denote inverted U-shaped frames arranged in parallelism with the lower ends thereof bent outwardly to provide feet 3 adapted to rest upon ties or sleepers 4, arranged in parallelism and supporting a switch rail 5 and a tongue 6.

The frames 1 and 2, contiguous to the feet 3, are provided with longitudinal straps 7, having the ends thereof mounted between the frames by transverse bolts 8, or other fastening means. The straps 7 intermediate the ends thereof are offset, as at 9, to provide clearance for an arm 10 that is pivotally mounted between said straps by a bolt 12 and a nut 13, or other Specification of Letters Patent.

Application filed July 24, 1911.

Patented Apr. 23, 1912.

Serial No. 640,208.

fastening means. The lower end of the arm 10 is pivotally connected, as at 14, to a switch throwing rod 15 adapted to move the switch tongue 6. The upper end of the arm 10 is offset, as at 16, and pivotally connected, as at 17, by a bolt and nut, or other pivotal means, to the lower end of a lever 18 arranged between the frames 1 and 2. The lever 18 extends upwardly between rollers 19 revolubly mounted upon pins 20 arranged transversely of the frames 1 and 2, these rollers serving functionally as a fulcrum point when moving said lever. The frames 1 and 2, between the pins 20, are provided with transversely alined openings 21 for a headed pin 22 that has one end thereof slotted, as at 23, to accommodate a lock or seal 24.

The bolt 12 retains a bracket 25 in engagement with one of the straps 7, and connected to said bracket by an eye-bolt 26 is a lower convolution of a coiled retractile spring 27, said spring having the upper convolution thereof connected to the lower end of the lever 18 by a bolt 28, a nut 29, and a spacing sleeve 30. A headed pin 22 retains the lever 18 in engagement with one of the rollers 19, the lever 18 always assuming an angular-1y disposed position, one position of the lever retaining the switch tongue in a closed posit-ion, and the other position of the lever retaining the switch tongue in an open position. With the switch tongue in either position, the coiled retractile spring 27 prevents accidental displacement of the switch tongue, owing to the fact that said spring is off-center; that is, it represents the hypotenuse of the triangle formed by the arm 10, the lever 18, and the spring 27 irrespective of the position of the lever 18. To adjust the lever 18, the pin 22 is removed to allow said lever to shift between the rollers 19, such movement of the lever increasing the tension of a spring 27, which immediately restores the lever to an angularly disposed position when the pivotal connection between the arm and said lever is moved out of longitudinal alinement with said arm and said lever.

The switch throwing device in its entirety may be made of light and durable metal, and easily and quickly manipulated when unlocked. In Fig. 5 the lever 8 is provided with a weight 18 and this weight can be used in lieu of the spring 27, for retaining said lever in an adjusted position.

What I claim is 1. A switch throwing device comprising frames, straps carried by said frames, spaced rollers supported by said frames, an arm pivotally supported between said straps, a lever mounted between said rollers and connected to said arm, a coiled retract-ile spring having one end thereof attached to said lever and the opposite end thereof supported by one of said straps, and means including a pin adapted to be located in said frames to hold said lever against one of said rollers.

2. A switch throwing device comprising frames, .straps carried by said frames, an arm pivotally mounted between said straps, spaced rollers carried by said frames and adapted to actuate a switch tongue, a lever pivotally connected to the upper end of said arm and supported between said frames, a coiled retractile spring having one end thereof connected to said lever and the opposite end thereof connected with one of said straps, and adjustable means carried by the frames for holding said lever against one of said rollers.

In testimony whereof I affix my signature in the presence of two witnesses.

DAVID OSBURN.

Witnesses:

MAX H. SROLOVITZ, CHRISTINA T. H001).

Copies of this patent may be obtained for five cents. each, by addressing the Commissioner of Patents. Washington, D. G. 

